转炉烟尘催化医疗废物低温热解脱氯提质实验研究
Experimental Study on the Dechlorination and Upgrading of Medical Waste Catalyzed by Steel-converter Ash
秦林波 1朱实权 2徐喆 2张强 1赵波 1陈旺生 1韩军1
作者信息
- 1. 武汉科技大学资源与环境工程学院,武汉 430081;冶金矿产资源高效利用与造块湖北省重点实验室,武汉 430081
- 2. 武汉科技大学资源与环境工程学院,武汉 430081
- 折叠
摘要
为了解决医疗废物热转化过程中氯导致设备腐蚀及二噁英生成等潜在危险,选取高氯成分聚氯乙烯(PVC)典型组分作为医疗废物的模型化合物,开展了转炉烟尘催化医疗废物低温热解脱氯提质实验研究,考察了热解温度、催化剂种类及添加量等对医疗废物低温热解脱氯的影响.结果显示,270℃时PVC热解脱氯率由无转炉粉尘添加时的57.94％提升到转炉粉尘添加量为0.2 g·g-1PVC时的72.57％,表明转炉粉尘对PVC热解脱氯过程具有显著的促进作用.PVC热解脱氯最佳工况为:热解温度270℃、转炉粉尘添加量0.2 g·g-1 PVC、热解时间30 min,此时医疗废物最佳脱氯率为72.57％和半焦热值高达42.47 MJ·kg-1.
Abstract
In order to avoid the potential hazards such as corrosion of equipment and formation of dioxins due to the presence of chlorine during high temperature gasification of medical waste,polyvinyl chloride(PVC)was used as a model compounds in medical waste,the dechlorination and upgrading of medical waste by low temperature pyrolysis catalyzed by steel-converter ash was experimentally carried out in a fixed bed reactor,and the effects of reaction temperature,catalyst type and addition amount on the release characteristics of pyrolysis products were investigated.The results showed that the dechlorination rate of medical waste was increased from 57.94％at 270℃ without adding steel-converter ash to 72.57％with adding steel-converter ash of 0.2 g·g-1 PVC,indicating that the dechlorination process was significantly promoted by the steel-converter ash.The PVC with 72.57％dechlorination rate and 42.47 MJ·kg-1 calorific value of semicoke was occurred at 270℃ with adding steel-converter ash of 0.2 g·g-1 PVC.
关键词
医疗废物/低温热解/脱氯提质/转炉烟尘/催化Key words
medical waste/low-temperature pyrolysis/dechlorination and upgrading/steel-converter ash/catalytic引用本文复制引用
基金项目
国家自然科学基金(51706160)
中央引导地方科技发展专项(2020ZYYD019)
湖北省重点研发计划(2022BCA085)
武汉市应用基础研究项目(2020020601012275)
出版年
2024
NETL
NSTL
万方数据